Search Mailing List Archives

Limit search to: Subject & Body Subject Author
Sort by: Reverse Sort
Limit to: All This Week Last Week This Month Last Month
Select Date Range     through    

[liberationtech] Help users in Iran reach the internet

Jacob Appelbaum jacob at
Fri Feb 10 03:45:28 PST 2012

Hi Libtech,

I just wrote this email to the Tor-talk list and I think it's important
for this list to see this ASAP:

Here's my original email as a page:

Here's the original email for discussion:

In the last 48 hours a major campaign of filtering has started in Iran -
it started slow and now appears to be that nearly all SSL/TLS traffic is
blocked on a few major Iranian ISPs. Details are rather rough but we're
working on some solutions - we've long had an ace up our sleeves for
this exact moment in the arms race but it's perhaps come while the User
Interface edges are a bit rough still.

Here's the deal - we need people to run Tor bridges but a special kind
of Tor bridge, one that does a kind of traffic camouflaging - we call it
an obfuscated bridge. It's not easy to set up just yet because we were
not ready to deploy this for everyone yet; it lacks a lot of analysis
and it might even only last for a few days at the rate the arms race is
progressing, if you could call it progress.

There are highly technical instructions here:

Currently if you run such a bridge, you'll either need to manually tell
us (via email to tor-assistants at ) about it or you'll need
to share these bridges with people you want to help directly. It's a
pain and we're working on it.

Here's a bug report where we're working around the clock to get stuff
going in a user friendly manner:

This kind of help is not for the technically faint of heart but it's
absolutely needed for people in Iran, right now. It's likely that more
than ~50,000 - ~60,000 Tor users may drop offline.

Watch this graph for an idea of the censorship impact of directly
connecting Tor users:

Here's the same graph but for Tor bridge users in Iran:

We're working on easy to use client software and if you're in Iran or
need one desperately, please email help at We'll try to
get you a working obfsproxy bridge address and working client software.

All the best,

More information about the liberationtech mailing list